Here is the BOM for the schematic I just posted. All components listed will fit correctly on my boards. You may use other components, but the part numbers shown allow you to check the data sheets for part sizes and lead spacings. This should help in selecting parts that will fit the spaces on the boards.
Hi Steve,
I used the one @comcast.net , from which I got your latest reply.
I paid with paypal at the same address on March, 15th and Paypal says the transaction has been completed.
I did not ask before because I knew you were busy with exams and so on...
Ciao
Andrea
I used the one @comcast.net , from which I got your latest reply.
I paid with paypal at the same address on March, 15th and Paypal says the transaction has been completed.
I did not ask before because I knew you were busy with exams and so on...
Ciao
Andrea
Andypairo said:
I did get that and your transistors have been shipped. When you said they "bounced back", I thought you had tried since then. A number of people have had trouble sending me E-mails at the new address.
traderbam,
The aim should be that. You can get pretty far with a purposeful attitude. The alternative way is less appealing, applying a number of nonlinear stages and GNF hoping that it will fix everything. It won`t.
Very true, but almost any other operating point would result in better linearity than the present one.
Dynamic distortions are basically caused by overdriven stages and and poor bandwidth and are in practice existent only in conjunction with feedback.
If this configuration was remunerative, would almost certainly have been invented for a long time ago. It`s very nonlinear.
The question is what is achieved? The goal of this kind of undertaking should be to eliminate crossover distortion by preventing switching at all combinations of input voltage and output current, giving an unmistakable class A sound. I doubt, however, it`s accomplished here. It requires a little more finesse.
Lumba Ogir said:
Hi Lumba. It is disappointing that SD is evading your question and has not offered an explanation himself. Assuming this was not just a trial and error decision made on the bench. It could have been and that's fine but doesn't explain what is going on.
I understand your criticism. Is it based on conventional good practice or have you also measured or simulated or analysed it to show what changes when the drivers are biased or not?
If there are differences, then you have to tie those differences to differences in THD (if you want to address the specific parameter which this thread is pre-occupied with) or, preferably, tie them to differences in sound quality.
Brian
Lumba Ogir said:
Ar you saying that everything that will work would have been invented a long time ago? Could you say what you mean by nonlinear?
What is achieved? I designed a circuit that was not simply a reworked version of a previous design. Doesn't originality count at all? To some people, making a circuit work as simply as possible is finesse. I have refrained from saying much about the sound of my amps. That will have to be judged by each individual after listening. Your doubt is noted, however that does not prevent the circuit from functioning.
traderbam said:
I didn't realise that leaving my computer to sleep occasionally was evading the question. I am glad you are disappointed however.
A trial and error decision made on the bench? I thought I had explained that. I was moving a big box of assorted parts and spilled them onto an old circuit board. It worked, so I reverse engineered it to get a schematic. I still have no idea how it works.
Have a nice day. 🙂
Hi Mr. Steve,
Allow me to address you with all respect because thats what you deserve. Pls don't let the narrow minded people ruin your day, you deserve much much better sir, besides i it must be understood that it's not your obligation at all to answer all rude challenges thrown to you by those experts on their own.
Regards,
mannycc
Allow me to address you with all respect because thats what you deserve. Pls don't let the narrow minded people ruin your day, you deserve much much better sir, besides i it must be understood that it's not your obligation at all to answer all rude challenges thrown to you by those experts on their own.
Regards,
mannycc
😎 🙂 🙂 Well said, steve.., true diplomacy.
I thought all had given up harassing this thread... then
too much coffee/boredom... boom!
Andy , thanks for preview of amp's performance..
OS
Steve Dunlap said:
You do sarcasm as well as evasion. Multi-talented.
How is the sale of that big box of assorted parts coming along?
traderbam said:
You do sarcasm as well as evasion. Multi-talented.
How is the sale of that big box of assorted parts coming along?
You asked.....
Here is the answer:
http://www.soundstage.com/masz02.htm
Just read about the amplification used and everybody
would know all the unansvered questions....
Nice day to all
SOUND_Rays, you are naive to believe all thats written on the net, this the second time someone puts that nonsense on this thread, just read the following sentence but try to understand exactly what it means by checking what the real technical significance is.
++Tom explained that the amps idle at class AB and revert to class A when amplifying source material++
This is clearly misleading the people that dont have the technical knowledge, I have not built this circuit, yes maybe it is non switching but I doubt even if non switching both the complementary transistors are fully on all through a cycle when a signal passes through it. Now compare it to say Tanaka s non switching circuitry claim which states that it decreases switching distortion significantly which is true and he proves this with hard evidence and does not make a ridiculous claim like the one seen on that review. A review like that actually destroys the credibilty to those that have some technical knowledge.
The review goes further and becomes even more ridiculous, I had to
. Take this for instance ++This is the first time I've heard a speaker reproduce not only the precise dimensions of the stage, but also those of the auditorium++, in other words what this author is saying is that he was in this stage or auditorium at the time of the recording and what he is hearing is exactly the same. Im pretty sure he was not there, 
, Ive read many buttered reviews but this one is just too much :bs:
Does this circuit sound good??, I bet it does, Its a diamond buffer type topology, they all do sound rather good. I have built them in all kinds of ways and with different components and they never dissapointed.
I hope someone will put all to rest by showing some real evidence what this circuit can do or not do by showing some scope pics soon.
++Tom explained that the amps idle at class AB and revert to class A when amplifying source material++
This is clearly misleading the people that dont have the technical knowledge, I have not built this circuit, yes maybe it is non switching but I doubt even if non switching both the complementary transistors are fully on all through a cycle when a signal passes through it. Now compare it to say Tanaka s non switching circuitry claim which states that it decreases switching distortion significantly which is true and he proves this with hard evidence and does not make a ridiculous claim like the one seen on that review. A review like that actually destroys the credibilty to those that have some technical knowledge.
The review goes further and becomes even more ridiculous, I had to
. Take this for instance ++This is the first time I've heard a speaker reproduce not only the precise dimensions of the stage, but also those of the auditorium++, in other words what this author is saying is that he was in this stage or auditorium at the time of the recording and what he is hearing is exactly the same. Im pretty sure he was not there, , Ive read many buttered reviews but this one is just too much :bs: Does this circuit sound good??, I bet it does, Its a diamond buffer type topology, they all do sound rather good. I have built them in all kinds of ways and with different components and they never dissapointed.
I hope someone will put all to rest by showing some real evidence what this circuit can do or not do by showing some scope pics soon.
If you dont like this amp, why are you here at all
No point in saying "I dont like fullrange drivers" at fullrange forum
Or being at tube forum saying that tubes are unreliable
Or being at Pass forum speaking against classA
No point in saying "I dont like fullrange drivers" at fullrange forum
Or being at tube forum saying that tubes are unreliable
Or being at Pass forum speaking against classA
homemodder said:
Tom explained wrong. I address that in an earlier post. The reviewer (whom I do not know) simply reported what he was told. I was not present and was given no chance to correct the misinformation. This may have been misleading people, but was not deliberate, as you imply.
As for hard evidence, I hadn't thought of this forum as a magazine for peer review before I posted. Relatively few here have the resources to do the level of testing that has been demanded of this circuit. I did have, and have stated my results. I did not publish the results for review at the time as that was not necessary to market the product. I have explained why I will not do so now.
Would you please point out where in that review the ridiculous claims were made about my amps? That review is evidence at least some of my amps did exist. Little else can be read into it concerning the amps.
Scope pics have been posted.
Steve Dunlap said:
I really hope some of those who payed and are building your amp are going to come up with some consistent measurements. Those could be the basis for comparing Krill with other topologies and do a cost benefit analysis. I am myself not going to post my measurements here simply because I don't want to further stir the waters. There's no lesson like the one can teach himself.
I'm afraid though that results discussion will go only the "how does it sound" path. Not that there's anything wrong with that... BTW, I'm also pretty sure Bybee devices or Shakti stones will greatly improve the Krill sound.
tinitus,
Please keep facts straight, where In my comment do I state, ++I dont like this amp++. I do not wish to become part of the flamewars in this thread, so dont involve me by misrepresenting my comments. I made no comment about Steves circuit except that I hope someone will show some scope pics soon, but I did comment on that hideous misleading review. Correct me if Im wrong but the output transistors are not both always fully on and that means it is not operating in class A, and believe me the author was also not present during the recording so can not make the sonic claim that he did. In black and white, the review is untruthful and misleading.
My interest in this circuit is purely on its operation and what exactly the non switching mechanisn at play here is, not misleading mambo jumbo marketing hype. As far as I can read theres no mention of steve or any comment of his on that review, so you dont need to bring out your guns to come defend him. Its not up to you to decide for me whether I like or dislike the circuit and misrepresent this to others, how do you know whether I like or dislike the circuit. xeye:
BTW is it stated somewhere one can only comment or view threads where you like the design and for no other interest, please point it to me, I must have missed it.
Please keep facts straight, where In my comment do I state, ++I dont like this amp++. I do not wish to become part of the flamewars in this thread, so dont involve me by misrepresenting my comments. I made no comment about Steves circuit except that I hope someone will show some scope pics soon, but I did comment on that hideous misleading review. Correct me if Im wrong but the output transistors are not both always fully on and that means it is not operating in class A, and believe me the author was also not present during the recording so can not make the sonic claim that he did. In black and white, the review is untruthful and misleading.
My interest in this circuit is purely on its operation and what exactly the non switching mechanisn at play here is, not misleading mambo jumbo marketing hype. As far as I can read theres no mention of steve or any comment of his on that review, so you dont need to bring out your guns to come defend him. Its not up to you to decide for me whether I like or dislike the circuit and misrepresent this to others, how do you know whether I like or dislike the circuit. xeye:
BTW is it stated somewhere one can only comment or view threads where you like the design and for no other interest, please point it to me, I must have missed it.
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